Telautograph



No. 60,892. Pa 'tented Jan. 17, |s99. a. s. TIFFANY.

TELAUTDGRAP'H.

( Application filed Aug. 21, 1897. Renewed July 29, 1898.)

2 Sheets-Shea! I.

(No Model.)

Nb. 6I7,892. Patented Ian. [7, I899.

G. S. TIFFANY.

TELAUTOGRAPH. (Applicatiqn filed Aug. 21, 1 897. Renewed J'u 1y 29, 1898.)

2 Sheets- Sheet 2.

(No Model.)

. :llllllllll' m z 'mrdfon mm 3,7

GEORGE s. TIFFANY, or HIGHLAND PARK, ILLINOIS, nssrenon TO THE GRAY NATIONALTELAUTOGRAPII COMPANY, or RIQIIMOND, VIRGINIA.

TELAUTOG RAPH.

SPECIFICATION forming part of Letters Patent No. 617,892, dated January 17, 1899. i

7 Application filed August 21, 1897. Renewed July 29,1898. Serial No. 687,233. (No model.)

To all whom it 71' i "y /concern:

Be itknown that I, GEORGE S. TIFFANY, a citizen of the United States, residing at Highland Park, county of Lake, and State of Illinois, have invented certain new and useful Improvements 'in 'lelautographs, fully described and represented in the following specification and. the accompanying drawings, forming apart of the same.

My invention relates to improvements upon the telautographic instruments heretofore patented by :me.

I The .invention relates chiefly to the apparatus known inthis art as the escapement r 5 devices; and it consists, so far as regards this partof the invention, in improvements whereby these devices are simplified; Here tofore in the use of escapements it has been found necessary to employ a reversing-clutch of some sort which should cause the reversal in the direction of'movement of the receivingpen in'accordance with the reversal in the direction of movement of the transmittingpen? In my present invention this clutch is 2 5 dispensed-'with-and instead thereof I substitime as a reversing mechanismmeans for controlling the 'appl-ication'of the pawls to the escapement-wheel; so that the escapementwheelshall'bedriven by the pawls in either 0 direction'in' accordance with the direction of movementofthetransmitting-pen. Thus the clutches heretofore employed are dispensed withand-the simplicity and certainty of the mechanism are greatly increased.

My invention also relates to certain iniprovem'ciits" the organization of circuits eontrol-lin g tliees'c'apni cut-magnet, whereby upon each hereof the armature'of theescapementj-magnet' a resistance is cut into the 40 circuit o f-t'h'e operating-coil; whereby the pull of the magnet on the armature is reduced and the nextmovement of the armature is'expedited, and, further, the current is eeonomized.

Myinvention also'c'onsists, in part, of modi- 5 lications of andimprovements upon the telautographic instrumentshown in m'yapplication, Serial No; sos ssogfii a' May 29, 1896; renewed February 1'1, IS98',,renewal numbeig 669,975. In my said applieation Ihave shown a construction 'of-apparatus and-organization of circuits wherein impulses of like polarity by the numerals 9 and 9.

occasioned by the movements of the transmitting-pen cooperate with induced impulses of opposite polarity induced thereby to controlthe receiving-pen. In my present appli- 5 5 cation I showa construction andorganization wherein the'impulses of like polarity occasioned by the movements of the transmit-tingpen are transmuted by ind u'ction into to-andfro impulses, which inducedimpulses control the movements of the receiving-pen.

My present invention also includes otherdetails of construction and organization, which will hereinafter be particularly pointed out.

In the drawings annexed -fiigure lis a plan View of my improved escapement.- Fig. 1 is a View showing the escapement mechanism in a different position from that shown in Fig. 1. Fig. 2 is a side elevation of the same. -Fig. 3 is a sectional elevation onthe line 3 3 of Fig.

2. Fig. at is a diagram of the circuits at the receiver. Figs. 5 and 6 show modifications of the escapement mechanism.

Referring to Figs. 1, 2, and 3, the shaft 1 carries one of the receiving-drums 2 of the receiving instru1nent,- to which are attached in the usual manner one of the pen-arms 3 and escape-wheel 4;. The esc'ape nent-magnet E is provided with two coils e e and pivoted armature 5, to which is attached. the forked extension 6, carrying the pawls. Each of these pawls consists in the construction shown of twolegs 7 Sand 7 8,, having faces adapted to engage with the teeth of the escapement- Wheel. The legs 7 8 of each pawl are fastoned together and; each are pivoted to the extremity of one of the forks of the extension 6. The two pawls I designate; respectively, These pawls are adapted to be so shifted that either of the 0 legs 7 8 maybe caused to take a driving position with reference to the teeth of the ratchetwheel, and the direction in which the ratchetwheel is moved by the pawls will depend upon this adjpstment. That one of the legs of each'pawl which is not in driving position with reference to the eseapeinent-wheel will be in looking position with reference thereto and will prevent by its engagenientany movement of the escapement-wheel beyond the loo. single-step which=it takes under the pressures of the other leg. The .pdsiliioh or the pawl shown in Fig. l is that for moving the escapement-.wheelin the direction shown by the arrow. 1 r

Means for shifting the position of the pawls in accordance with the direction in which the escapement-wheel isto be driven consists in the form shown in these figures of a spring 10, connected to a pin 11, attached to the leg 7 of pawl 9 and also connected to the pin .12, attached to a prolongation 13 The spring 10 is shifted between the positions shown in full and dotted lines in Fig. l by the arm 14, projecting upward from the armature 15 of the reversing-magnet H. This arm 14; is slotted at its upper extremity, as shown in Fig. 2, so as to embrace the spring 1O, and is preferably very thin, a watch-spring being suitable for the purpose, so that the variations in distance between its point of attachment to the armature l5 and the spring 10 due to its angular movement may be compensated for by the bending of the arm rather than by friction between the arm and the spring l0, greater delicacy being thus secured and less exertion of power required by the magnet H.

It will be observedthat the tension given to spring 10in the position which it occupies in Fig. 1 is to cause the legs 7 and 8 to always maintaincontact with the escapementwheel, and therefore to act as the driving members of the pawls, the legs 8 and 7 in thisposition of the pawls acting as the locking'members. In the position shown in Fig. 1 the armature extension 6 has just moved upward, as it appears in the drawing. In making this movement the leg 8 has pushed the escapement-wheel forward until the leg 7' came into contact with a tooth and locked the wheel against further movement. Meanwhile the pawl!) was inoperative and remained with its leg 7 pressed against the escapementwheel by the spring 10. The next movement of the armature extension 6 will be downward, and during this movement the escapementwheel will be propelled in the same direction as before by theleg 7 until the leg'8 comes in contact withthe tooth of the wheel, preventing further movement, the position of the parts at that moment being thatrshown in Fig. 1. Meanwhile, also, the pawl 9 will be in operative contact between the leg 8' and the escapement-wheel, being, however, maintained by the tension of spring 10. Reversal of the position of the spring 10 would, of course, cause the legs 8 and 7 to become the driving members of the pawls, and the escapement-wheel will then move in the opposite direction. This construction is only one of very many forms that maybe adopted without departing from my invention. I regard as within my invention any means by which the pawls may be shifted so as to cause the same in accordance with their position to move tion.

Another form of construction which may the escapement vheel in either direcof the pawl 9'4 be adopted is shown in Fig. 5, in which the two pawls 16 and 17 are pivoted, respectively, to the two forks'of the armature projection (3, these pawls being so placed that they have a sufficient amount of friction on their pivots to hold them in whatever position they are placed. Attached to the shaft of the escapement-wheel isa guide 18, having forked ends, as shown. This guide is fixed. Each pawl is pointed, as shown, and each extremity of the guide 18 has acorresponding' notch. As each pawl in turn moves toward the escapement-wheel it enters the notch in one of, the extremitiesof the guide 18. Taking for convenience the description of pawl 16, if it enters the notch of the guide 18 on the left-hand side of the point of the tooth which lies in the notch it will in being deflected by the guide cause the escapement-wheei to move in the direction of the arrow. If, on the contrary, it enters the notch of the guide 18 on the righthand side of that point, it will cause the ratchet-wheel to revolve in a direction oppo site'to that of the arrow. The construction is such that the point of the tooth will always be in the center of one of the notches of the guide 18 when the pawl is bottomed in the guide-notch on the opposite side of wheel 4. The position in which each pawl enters the notch will be determined bythe position given to it upon the arm 6 by a pivoted stop 19, which engages with the rear surface20 of the pawl. These stops 19 are connected with the armature of magnet H and are so placed on their pivots by the armature of magnet H as to give positions to the pawls suitably to move the ratchet-wheel in the appropriate direction in accordance with the polarity of the current passing through the magnet H, which in turn depends upon the movement of the transmitting-pen. In place, however, of having the magnet I-I modify the positions of the stops 19 the latter may be fixed and the armature of the magnet H may give a reciprocating movement to the guide 18. home ofthe positions of the guide 18 each of the pawls will on entering the corresponding recess strike against the lower inclined face of the guide, and in the other position of the guide the same pawls will strike against the upper inclined face, causing inthe two cases opposite movement of the escapement-wheel.

In Fig;6iSISl10Wn still another construction in which the pawls 21 22 are two-legged, as inthe construction shown in Figs. 1, 2, and 3, and in which the position of these pawls, instead of being determined by a spring, is determined by pivoted abutments 23 and 24, which are shifted by the action of the armature of the magnet H, so as to give the proper positions to the pawls 21 22 upon each contact of these pawls with the abutments.

The forked pawls are pivotally mounted upon the, forks of the projection 6 and operate substantially in the same way as the twolegged pawls of Fig. 1.

Referring to Fig. 4, the circuits will now be described. The instrument is provided with the usual two line-wires, and it will be understood that, as is usual in describing such instruments, but one half of the instrumentand circuitconnections are shown, these being a duplicate of the other half. One of the line-wires enters at L and passes through a polarized relay F and the primary winding of an inductioh-coil-D to the-ground.----The secondary circuit of the induction-coil passes through arepeating polarized relay'J, by

' means of which thefto-and-fro induced impulses of the secondary coil of magnet D are enabled to control the coils. e"e governing the escapement. When the armature 23 of -the magnet J rests against the stop 24, the

circuit of magnet-coil e is closed through wires aa, contact 25, resistance R, wire a contact 26, unison-switch 27, wire a to battery. When the arm 23 shifts to its position against contact 28, the circuit just mentioned will be broken and the circuit of coil Q will be closed through the wire 0, spring 29,

mounted upon armature 5, wires 0 a, &c., to battery. The armature will now move under the'pull-of coil e, and its movement I will be hastened by the pressure of spring 29,

3 leayes the stop 3Qresistance Riscnt into air-i.

whiohis'm'adeof some strength and caused to be pulled forcibly against the stop 30 by the act-ion'of coil 2. 7 As soon as the spring cuit, thus diminishing the pull of the coil e and causing thearmature to more promptly move under'the next pull of coil 6'. Reversal in the direction of movement of the receiving-pen is efiected by reversal in the polarity of the pulsations sent to line, which determinethe position of the armature 33 of the polar-,relayF, and thereby the energization or deenergization of the magnet H, the operation of which upon the escapement is as above described, This feature of the inven-' with a core and an armature 31,'which is nor-.

mally held against the core when the pulsations are uponthe line; but when an interruptionpf these currents occurs thearmature 31 fallss'against the stop 32 and closes circuits fromthe battery through wire cl", armature 23, stop 24, wire a, magnet e, wire a, re-

sistance-R, (or spring 29'when the'armature' 5 is in the' reversed position to that shown,) w re a, contact 26, spring 27, wire a to battery, and another, circuit, through wire at,

armature;23,'stop 24, wire d, st -32, armature 31, wire d", wire c, coil ofim net e,-wire 0, spring 29 or resistance R, according to the position of the armature 5, wire a and on, as before. I The coils e e will be successively energized by these circuits and successively partially deehergized by the movements of the armature 5, and the receiviug pen will thus be kept in motion toward the unisonpoint of the receiver until a stop on the penarm -strikes th'e contact-spring 27 and moves it away from the stop 26, thus interrupting the circuits and bringing the pen to rest. The direction of movement of the pen under these conditions will always be the same, since it will correspond to the movement of the transmitting-pen to the position of unison, which corresponds also to the position of the armature 33 of the magnet F against stop 34, in which position the reversing-magnetH is deenergized. When the transmitting-pen is moved outward to commence writing,-the I polarity of the pulsations is reversed, the armature 33 of the polar-relayF shifts its position, the armature of magnet H is drawn up, and the circuit of the escapements is closed around the unisonswitch 26 27. The paper is shifted in this organization by appropriate connections also controlled .by the armature 31 of'induction-coils D. It will be observed that in this construction the repeating-relay is operated by induced currents of bothpolarities instead of by direct currents of one polarity and induced currents of another, as in the organizations shown in my pending applications. The present construction has the advantage of simplicity.

What I claim isj v I v 1. Ina telautographic instrument, the combination' of means forsending impulsesof like polarity to line dependent in number upon the movement in extent of the transmittingpen, means for producing a series of induced pulsations of successively opposite polarity, and means for moving the receiving-pen step by step operated by said to-and-fro induced pulsations, substantially as set forth.

2. In a telautographic instrument, the com bination of means for sending impulses of like polarity oline dependent in number upon the movement in extent of the transmitting: pen, means for producing a series of induced pulsations-of successively opposite polarity, means for moving the receiving-pen step by step operated by said to-and-fro induced pulsations, means for reversing the polarity of on-reversal in direction of the movement of the transmittingrpen, and means for reversingthe direction of movement of the receivity,substantially as set forth.

3. In atelautographic instrument, the combination of means for sending impulses of like polarity to two line-wires dependent in number respectively upon the movements in extent of the transmitting-pen in each of two directions of motion, means for prod ucing two sets of' induced impulses the successive im- 1 the said pulsations sent from the transmitter I -ing-.pen; controlled by said changes in pol'arpulses of each set being of opposite polarity, and means for causing the movement in extent of the receiving-pen in two directions operated by said two sets of to-and-fro induced impulses respectively, substantially as set forth. 4. The combination of a telautographic receiving-pen and an escapement for controlling the movement of the same, a magnet-coil and armature for controlling the escapement, a contact-spring mounted on the armature, circuit connections whereby on the movement of the armature toward the coil the said contact-spring will operate to change the circuit of the coil so as to reduce the attraction of the coil for its armature, and a fixed stop against which said spring presses when drawn up, the joint effect of these features of construction causing a greater prom ptness in the next movement of the armature, substantially as described. p

5. The combination of an escape-wheeha vibrating lever carrying pawls for moving the escape-wheel, a spring for holding the pawls in either'of two positions against the escapewheel, and means for changing the action of the spring and consequently the position of the pawls so as to cause the wheel to be moved by the pawls in either direction, substantially as set forth.

6. The combination with an escape-wheel, a magnet and armature for the same having an extension provided with pawls for moving the escape-wheel, a spring for holding each pawl in either of two positions against the escape-wheel, means for changing the action of the spring and consequently the position of the pawls to cause the escape-wheel to be 7, In a tela-utographic instrument the combination of a receiving-pen, an escapenient for driving the pen, a spring for holding each pawl in either of two positions against the escape-wheel, means for changing the action of the spring and consequently the position of the pawls to cause the escape-wheel to be moved in either direction, and a reversingmagnet controlled in accordance with the direction of the transmitting-pen for control= ling the positions of the pawls, substantially as set forth. v a

8. The combination of the escape-wheel with the two-legged pivoted pawl, the two legs occupying such a relation to each other that when either acts as a propeller the other acts as a stop, substantially as set forth.

9. The combination of the escape-wheel, the vibrating forked projection carrying the pivoted pawls, the spring 10 connected witht-he pawls at a distance from their pivots so asto determine their relations to the escapewheel, and means'for shifting the positionof the spring, substantially as set forth.

10. The combination of the escape-wheel and pawls, the spring'10, forked rod 14, and I the magnet H, substantially assetforth.

In testimony whereof- I have hereunto set my hand in the presence of two subscribing 8 witnesses.

GEORGE s. TIFFANY.

itnesses:

T. F. KEHoE, G. M. BoRs'r. 

